static void Main(string[] args)
{
try
{
CreateTestFile();
// 测试当前线程的安全上下文
Console.WriteLine("主线程权限测试：");
JudgePermission(null);
// 创建一个子线程 subThread1
Console.WriteLine("子线程权限测试：");
Thread subThread1 = new Thread(JudgePermission);
subThread1.Start();
subThread1.Join();
// 现在修改安全上下文，阻止文件访问
FileIOPermission fip = new FileIOPermission(FileIOPermissionAccess.AllAccess, testFile);
fip.Deny();
// fip.Demand();
Console.WriteLine("已成功阻止文件访问");
// 测试当前线程的安全上下文
Console.WriteLine("主线程权限测试：");
JudgePermission(null);
// 创建一个子线程 subThread2
Console.WriteLine("子线程权限测试：");
Thread subThread2 = new Thread(JudgePermission);
subThread2.Start();
subThread2.Join();
// 现在修改安全上下文，允许文件访问
SecurityPermission.RevertDeny();
Console.WriteLine("已成功恢复文件访问");
// 测试当前线程安全上下文
Console.WriteLine("主线程权限测试：");
JudgePermission(null);
// 创建一个子线程 subThread3
Console.WriteLine("子线程权限测试：");
Thread subThread3 = new Thread(JudgePermission);
subThread3.Start();
subThread3.Join();
Console.ReadKey();
}
finally
{
DeleteTestFile();
}
}
static void Main22()
{
//string path = @"C:\Users\Kikyo\Desktop\临时\1.txt";
//FileHelper.ReadFileAsync(testFile, CallBack);
//string s = File.ReadAllText(path);
//Console.WriteLine(s);
CreateTestFile();
Console.WriteLine("主线程权限测试：");
JudgePermission(null);
Console.WriteLine("子线程权限测试：");
Thread subThread1 = new Thread(CreateTestFile);
subThread1.Start();
subThread1.Join();
FileIOPermission fip = new FileIOPermission(FileIOPermissionAccess.AllAccess, testFile);
fip.Deny();
Console.WriteLine("已成功阻止文件访问");
Console.WriteLine("主线程权限测试：");
JudgePermission(null);
Console.WriteLine("子线程权限测试：");
Thread subThread2 = new Thread(CreateTestFile);
subThread2.Start();
subThread2.Join();
SecurityPermission.RevertDeny();
Console.WriteLine("已成功恢复文件访问");
Console.WriteLine("主线程权限测试：");
JudgePermission(null);
Console.WriteLine("子线程权限测试：");
Thread subThread3 = new Thread(CreateTestFile);
subThread3.Start();
subThread3.Join();
Console.ReadKey();
}